Archive notice: Sounder runs on Windows 32-bit only (up to Windows 7). The software is no longer for sale, but the demo is still available as a free download below. Last updated November 2, 2013.

Create ambient music that plays forever

Sounder lets you create, save and exchange animated, 3-D interactive ambient musical pieces that play perpetually — music that never repeats, never ends.

Each floating shape is a musical instrument, drifting through space, generating notes according to its own rules. Resize a window, and the music changes. Sounder has been called a "musical lava lamp."

Sounder's ground-breaking concept won an award in the New Voices, New Visions competition sponsored by TheVoyager Company, Paul Allen's Interval Research, and Wired Magazine.

Download Free Demo
Sounder interface showing floating 3D shapes as musical instruments

Each floating shape is a MIDI instrument

Keyboard Magazine

"Hypnotic — I was instantly transported!"

Music & Computers

"Ten minutes after starting up Sounder, you'll be on another plane."

Excite Reviews

"Brian Eno would be jealous!"

Users

"This is probably the best piece of composition software I have ever used."

Up and running in 3 minutes